[PATCH 0/1 SRU X/Z/A] Forbid Plantronics C310/C520-M reads sample rate

Kai-Heng Feng kai.heng.feng at canonical.com
Fri Oct 20 08:13:11 UTC 2017

BugLink: https://bugs.launchpad.net/bugs/1708499
BugLink: https://bugs.launchpad.net/bugs/1709282

[ 74.344674] usb 3-1: 2:1: cannot get freq at ep 0x1
...the same message will flood over dmesg.

[Test Case]
With this patch, ALSA stops trying to read sample rate from device, hence
no more error messages.

Make affected devices to use sample rate quirk.

[Regression Potential]
Minimal. This patch only affect two specific devices.

Kai-Heng Feng (1):
  ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M

 sound/usb/quirks.c | 2 ++
 1 file changed, 2 insertions(+)


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